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1、Workshop 11:Basic Optimetrics Analysis 2013 ANSYS, Inc.May 21, 20131Release 14.5ANSYS Maxwell 3DV16About Workshop Puck Magnet Attractor Optmietrics is a powerful tool for obtaining optimized values of input parameters for minimum/maximum/required value of Output parameters This example describes how

2、 to create and optimize a puck magnet producing an optimal force on a steel plate using the 3D Magnetostatic solver and Optimetrics in the ANSYS Maxwell 3D Design Environment. The optimization obtains the desired force by varying the air gap between the plate and the puck using a local variable. 201

3、3 ANSYS, Inc.May 21, 20132Release 14.5Problem Setup Create Design Select the menu item Project Insert Maxwell 3D Design, or click on the icon Change the name of the Design to Puck_Attractor Set Solution Type Select the menu item Maxwell 3D Solution Type Solution Type Window:1. Choose Magnetic Magnet

4、ostatic2. Click the OK button 2013 ANSYS, Inc.May 21, 20133Release 14.5Create Geometry Create Steel Plate Select the menu item Draw Box1. Using the coordinate entry fields, enter the position of box X: -10, Y: -10, Z: 0, Press the Enter key2. Using the coordinate entry fields, enter the opposite cor

5、ner dX: 20, dY: 20, dZ: -1, Press the Enter key Change the name of the Object to Plate Change the material of the Object to steel_1008 Create Puck Select the menu item Draw Regular Polyhedron1. Using coordinate entry fields, enter the center of the base X: 0, Y: 0, Z: 2, Press the Enter key2. Using

6、coordinate entry fields, enter radius and height dX: 2, dY: 2, dZ: 2, Press the Enter key3. Number of Segments: 12 Change the name of the Object to Puck Change the material of the Object to NdFe30 2013 ANSYS, Inc.May 21, 20134Release 14.5Create Parameter for Puck Motion Create Puck Motion Select the

7、 Object Puck from the history tree Select the menu item Edit Arrange Move1. Using the coordinate entry fields, enter the reference point of move vector X: 0, Y: 0, Z: 0, Press the Enter key2. Using the coordinate entry fields, enter the target point of move vector dX: 0, dY: 0, dZ: 0, Press the Ente

8、r key Expand the history tree for the Object Puck Double click on the command Move from the tree In Properties window,1. Move Vector: Specify as 0, 0, move2. In Add variable window, Unit Type: Length Unit: mm Value: 0 Press OK3. Press OK to close Properties window 2013 ANSYS, Inc.May 21, 20135Releas

9、e 14.5Create Relative Coordinate System Create Relative Coordinate System Select the menu item Modeler Coordinate System Create Relative CS Rotated1. Using the coordinate entry fields, enter the X axis X: 0, Y: 0, Z: 1, Press the Enter key2. Using the coordinate entry fields, enter a point on XY Pla

10、ne dX: 0, dY: 1, dZ: 0, Press the Enter key Assign Coordinate System to Puck Select the object Puck from the history tree and goto the properties window Change the Orientation of the object to RelativeCS1Note: In Maxwell, all magnetic materials are magnetized in X direction. In this step, we will ch

11、ange the direction of magnetization for puck by creating relative coordinate system. 2013 ANSYS, Inc.May 21, 20136Release 14.5Create Region Change Work Coordinate System Select the menu item Modeler Coordinate System Set Work CS1. Select the coordinate System Global from the list2. Press Select Crea

12、te Simulation Region Select the menu item Draw Region In Region window,1. Padding individual directions: Checked2. Value: +/- X = 100 +/- Y = 100 +/- Z = 5003. Press OK 2013 ANSYS, Inc.May 21, 20137Release 14.5Assign Parameters Force Assign Force Parameter Select the object Plate from the history tr

13、ee Select the menu item Maxwell 3D Parameters Assign Force In Force Setup window,1. Name: Force2. Type: Virtual3. Press OK Create an analysis setup: Select the menu item Maxwell 3D Analysis Setup Add Solution Setup Solution Setup Window:1. General tab Percentage Error: 22. Convergence tab Refinement

14、 Per Pass: 50% Run Solution Select the menu item Maxwell 3D Analyze All 2013 ANSYS, Inc.May 21, 20138Release 14.5Solution Data View the Solution Data: Select the menu item Maxwell 3D Results Solution Data To view the Profile:1. Click the Profile Tab. To view the Convergence:1. Click the Convergence

15、TabNote: The default view is for convergence is Table. Select the Plot radio button to view a graphical representations of the convergence data. To View Force values1. Click Force tab 2013 ANSYS, Inc.May 21, 20139Release 14.5Optimetrics Setup Optimetrics Setup It is possible to optimize position in

16、order to obtain the specified force. For this optimization, the position will be varied to obtain a desired force of 0.25N. Specify Parametric Variables Select the menu item Maxwell 3D Design properties In Properties window,1. Optimization: Checked2. move: Include: Checked Min : 0 mm Max : 1 mm3. Pr

17、ess OKNote: Unless parameters are included in Optimization, they will not be available for Optimization Setup 2013 ANSYS, Inc.May 21, 201310Release 14.5Optimetrics Setup (Contd) Setup Optmization Select the menu item Maxwell 3D Optimetrics Analysis Add Optimization In Setup Optimization window,1. Op

18、timizer: Sequential Nonlinear Programming2. Max. No. of Iterations: 103. Select Setup Calculations4. In Add/Edit calculations window, select Output Variables5. In Output variables window, Name: target Expression: 0.25 Select Add Set name to cost1 Set Parameter to Force1 Expression: (target Force_z)2

19、 Press Add Press Done 2013 ANSYS, Inc.May 21, 201311Release 14.5Optimetrics Setup (Contd) Setup Optmization (Contd)6. In Add/Edit Calculations window, Parameter : Force1 Category: Output Variables Quantity: cost1 Select Add Calculation and Done7. Set Condition for cost1 to Minimize8. Change the tab

20、to Variables9. For the variable move Starting value: 0.5mm Min: 0 mm Max: 1 mm Press OKNote: Above Optimization Setup will vary move parameter in the range 0 to 1mm in order to minimize Cost1 which is difference between Target and Calculated valueUsers can set min and max focus points on Variables tab if probable location of minima is know. 2013 ANSYS, Inc.May 21, 201312Release 14.5Run Optimization Solve Optimization Analysis Expand the Project Manager tree to view Optimetrics Right click on the tab Optimization Setup1 a